Transmission Fluid Temperature Sensor, Checking

Special tools and workshop equipment required 

• Multimeter
• Wiring diagram

Requirements 

• The Transmission Fluid Temperature Sensor -G93- fuse OK.
• The battery voltage must be at least 12.5 Volts.
• All electrical consumers must be switched off.
• The parking brake must be engaged.
• The selector lever must be in the "P" position.
• The Ground (GND) connections to transmission must be OK.

Test procedure 

-- Perform a preliminary check to verify the customers complaint. Refer to PRELIMINARY CHECK .

Start diagnosis 

Procedure 

-- Disconnect the Transmission Fluid Temperature Sensor -G93- electrical harness connector -3-.

-- Check the electrical harness connector for damage, corrosion, loose or broken terminals.

-- Repair any damage found to the electrical harness connector.

If the electrical harness connector is not OK:

-- Repair the malfunction.

If the electrical harness connector is OK:

Checking resistance 

-- Using a multimeter --, check the Transmission Fluid Temperature Sensor -G93- terminals 1 to 2 for resistance.

ATF Temperature	Specified Values
Approx. - 30° C	37.0 - 51.0 KΩ
Approx. 10° C	5 - 8 KΩ
Approx. 25° C	3.0 - 5.0 KΩ
Approx. 110° C	230.0 - 265.0 KΩ
Approx. 145° C	100.0 - 120.0 KΩ

If any of the specified values are not obtained:

-- Replace the Transmission Fluid Temperature Sensor -G93-. For all Automatic Transmission component locations. Refer to Automatic Transmissions, Repair Group 38..

For all Automatic Transmission system removal/installation procedures and torque specifications. Refer to Automatic Transmissions, Repair Group 38.

If the specified values are obtained:

Checking wiring 

If the manufacturers test box is being used. Perform the following step.

-- Install the test box

If the manufacturers test box is not being used. Perform the following step.

-- Remove the Transmission Control Module (TCM) -J217-. Refer to TRANSMISSION CONTROL MODULE, REPLACING .

-- Using a multimeter --, check the Transmission Fluid Temperature Sensor -G93- electrical harness connector terminals to the Transmission Control Module (TCM) -J217- electrical harness connector T52 terminals for an open circuit.

Transmission Fluid Temperature Sensor -G93- electrical harness connector terminal	Transmission Control Module (TCM) -J217- electrical connector T52 terminals or test box sockets
1	45
2	8

Specified value: 1.5 Ω Max.

If the specified value was not obtained:

-- Check the wiring for a short circuit to each other, Battery (+), and Ground (GND).

-- If necessary, repair the faulty wiring connection.

If no malfunction is found in the wiring and the resistance was OK:

-- Replace the Transmission Control Module (TCM) -J217-. Refer to TRANSMISSION CONTROL MODULE, REPLACING .

-- Assembly is performed in the reverse of the removal.

Final procedures 

1. Check the DTC memory. DIAGNOSTIC MODE 03 - READ DTC MEMORY .
2. If necessary, erase DTC memory of the Transmission Control Module (TCM) -J217-. DIAGNOSTIC MODE 04 - ERASE DTC MEMORY .
3. Generate readiness code. READINESS CODE .